(a) Effective 14 Jul 80 the per diem rate for travel on temporary official business away from a permanent duty station in the territory by an employee of the ASG between the island of Tutuila, the Manu 'a group of islands and Swains Island is $40 per day.

(b) To be entitled to the full per diem, the employee must stay overnight and provide, with his travel expense report, a receipt evidencing that he stayed in a duly licensed accommodation facility. If such evidence is not presented or if the employee does not stay overnight, the employee is entitled to only 50% of the per diem rate.